Self-cleaning solar photovoltaic panel and process for its preparation

Abstract

The application relates to the technical field of solar energy, in particular to a self-cleaning solar photovoltaic panel and a preparation process thereof. The application adds anhydrous ethanol, ammonia water, deionized water, methyl triethoxysilane, tetraethyl orthosilicate and octadecyl trimethoxysilane to prepare silica sol. Then, tetra(2-hydroxyethoxy)silane, polypropylene glycol, toluene diisocyanate, betulin, 3,4-diamino furazan, silica sol and a catalyst stannous octoate are added to prepare a polymer. Glass, ethylene-vinyl acetate copolymer, a cell piece and ethylene-vinyl acetate copolymer are sequentially laid in layers; the laminated assembly is assembled with a frame to obtain a solar photovoltaic panel. Finally, a coating is prepared by taking the polymer as a raw material, and the coating is coated on the solar photovoltaic panel to obtain a finished product. The finished product has good hydrophobicity and antibacterial property, and therefore has a wide application prospect.

Description

Technical Field

[0001] This invention relates to the field of solar energy technology, specifically a self-cleaning solar photovoltaic panel and its manufacturing process. Background Technology

[0002] Solar energy is an infinitely renewable energy source. Solar photovoltaic (PV) panels convert sunlight into electricity, meeting energy needs in a renewable way. Compared to traditional fossil fuels, solar energy has a smaller environmental impact, reducing greenhouse gas emissions and helping to address climate change and environmental pollution. Furthermore, solar PV panels can be distributed across a wider geographical area and flexibly installed on buildings, rooftops, farmland, and other locations, reducing transmission losses and infrastructure construction costs while improving energy efficiency. However, over time, dust and animal waste accumulate on PV panels, reducing their photoelectric conversion efficiency and causing significant economic losses. This can also lead to localized overheating and damage. Therefore, cleaning the surface of PV panels has become an essential requirement for the development of the photovoltaic industry.

[0003] To overcome the shortcomings of existing technologies, this invention provides a self-cleaning solar photovoltaic panel and its manufacturing process. Summary of the Invention

[0004] The purpose of this invention is to provide a self-cleaning solar photovoltaic panel and its manufacturing process to solve the problems in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A manufacturing process for a self-cleaning solar photovoltaic panel includes the following steps:

[0007] Step 1: Mix tetra(2-hydroxyethoxy)silane, polypropylene glycol, and toluene diisocyanate, stir thoroughly, add catalyst, and react at 80-90℃ for 3-4 hours. After the reaction, add acetone to adjust the viscosity to prepare a prepolymer. Then add betulin and 3,4-diaminofurazan to the prepolymer and continue the reaction for 2-4 hours. After the reaction, remove acetone under reduced pressure at 50-60℃, and then add silica sol to prepare the polymer.

[0008] Step 2: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate them; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0009] Step 3: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 45-55 hours to obtain the finished product.

[0010] In a more optimized manner, in step one, the content of each component of the polymer is as follows: by mass parts, 30-40 parts tetrakis(2-hydroxyethoxy)silane, 40-60 parts polypropylene glycol, 50-80 parts toluene diisocyanate, 0.01-0.05 parts catalyst, 20-36 parts betulin, 30-40 parts 3,4-diaminofurazan, and 30-40 parts silica sol.

[0011] Ideally, the mass ratio of betulin to 3,4-diaminofurazol is 1:1.5-1.8.

[0012] Ideally, in step one, the catalyst is stannous isooctanoate.

[0013] In a more optimized manner, the preparation steps of silica sol in step one are as follows: anhydrous ethanol, ammonia and deionized water are mixed, heated in an oil bath to 60-70°C, and then silica material is slowly added dropwise. After the addition is completed, the mixture is stirred thoroughly for 10-14 hours. Then, octadecyltrimethoxysilane is added, and the mixture is reacted at 20-30°C for 11-15 hours to prepare silica sol.

[0014] Ideally, the mass ratio of silicon material, anhydrous ethanol, ammonia, deionized water, and octadecyltrimethoxysilane is 2:82:6:8.5:15-20.

[0015] Ideally, the silicon material is a mixture of methyltriethoxysilane and tetraethyl orthosilicate in a mass ratio of 0.5-1.0:1.

[0016] In a more optimized manner, in step two, the lamination process parameters are: lamination temperature of 130℃-140℃ and lamination time of 10-14min.

[0017] Ideally, in step three, the solid content of the coating should be 30-40%.

[0018] Ideally, in step three, the coating thickness is 250-300 μm.

[0019] The beneficial effects of this invention are:

[0020] This invention prepares a silica sol by adding anhydrous ethanol, ammonia, deionized water, methyltriethoxysilane, tetraethyl orthosilicate, and octadecyltrimethoxysilane. Then, a polymer is prepared by adding tetra(2-hydroxyethoxy)silane, polypropylene glycol, toluene diisocyanate, betulin, 3,4-diaminofurazan, the silica sol, and the catalyst stannous isooctanoate. Glass, ethylene-vinyl acetate copolymer, solar cells, and ethylene-vinyl acetate copolymer are then sequentially laminated. The laminated components are assembled with a frame to prepare a solar photovoltaic panel. Finally, a coating is prepared using the polymer as a raw material and applied to the solar photovoltaic panel to obtain the finished product.

[0021] The key feature of this invention is that, in step one, a polymer is prepared using tetratetra(2-hydroxyethoxy)silane, polypropylene glycol, toluene diisocyanate, betulin, and 3,4-diaminofurazan as the main raw materials. The betulin monomer has a lupene structure with a β-OH at the C-3 position, exhibiting high bioactivity and significantly enhancing the polymer's antibacterial properties. 3,4-diaminofurazan has a 1,2,5-oxadiazole structure, which, when covalently introduced into the polymer, provides long-term antifouling capabilities. Therefore, the compounding of betulin monomer and 3,4-diaminofurazan at a mass ratio of 1:1.5-1.8 can achieve synergistic antibacterial and defouling effects, significantly improving the self-cleaning performance of solar photovoltaic panels. Furthermore, a silica sol is prepared by adding anhydrous ethanol, ammonia, deionized water, silica fume, and octadecyltrimethoxysilane. Under alkaline conditions, the silica particles interact to form a network of silica nanoparticles. Due to the numerous pores in the network structure, the material exhibits high light transmittance. Simultaneously, the addition of octadecyltrimethoxysilane allows the methoxy groups to react with the hydroxyl groups on the silica sol surface, introducing long-chain hydrophobic groups and resulting in a silica sol with strong hydrophobic properties. Due to the presence of this strong hydrophobic interface, when water droplets roll onto the superhydrophobic surface, they carry away adhering dust, thus achieving self-cleaning properties. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] Raw material source:

[0024] The ethylene-vinyl acetate copolymer, model UE647-04, was provided by Dongguan Yingxiang Plastic Raw Materials Co., Ltd.; the polypropylene glycol, with a molecular weight of 2000 g / mol, was provided by Shandong Lanxing Dongda Chemical Co., Ltd.; one part by mass is 1 g.

[0025] Example 1: Step 1: Mix 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water, heat in an oil bath to 70°C, and then slowly add a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate. After the addition is complete, stir thoroughly for 14 hours, then add 18 parts of octadecyltrimethoxysilane, and react at 30°C for 15 hours to prepare silica sol.

[0026] Step 2: Mix 30 parts of tetrakis(2-hydroxyethoxy)silane, 40 parts of polypropylene glycol, and 50 parts of toluene diisocyanate, stir thoroughly, add 0.01 parts of catalyst, and react at 90°C for 4 hours. After the reaction, add acetone to adjust the viscosity to prepare a prepolymer. Then add 20 parts of betulinol and 30 parts of 3,4-diaminofurazanol to the prepolymer and continue the reaction for 4 hours. After the reaction, remove acetone under reduced pressure at 60°C, and then add 30 parts of silica sol to prepare the polymer.

[0027] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 140℃ for 14 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0028] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 55 hours to obtain the finished product, wherein the coating thickness is [missing information].

[0029] 300μm.

[0030] Example 2: Step 1: Mix 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water, heat in an oil bath to 67°C, and then slowly add a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate. After the addition is complete, stir thoroughly for 12 hours, then add 18 parts of octadecyltrimethoxysilane, and react at 27°C for 14 hours to prepare silica sol.

[0031] Step 2: Mix 30 parts tetrakis(2-hydroxyethoxy)silane, 40 parts polypropylene glycol, and 50 parts toluene diisocyanate, stir thoroughly, then add 0.01 parts catalyst, and react at 87°C for 3.7 h. After the reaction, add acetone to adjust the viscosity to prepare the prepolymer; then add 20 parts betulin and 30 parts 3,4-diaminofurazan to the prepolymer, and continue the reaction for 3.5 h. After the reaction, remove acetone under reduced pressure at 57°C, and then add 30 parts silica sol to prepare the polymer.

[0032] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 137°C for 13 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0033] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 53 hours to obtain the finished product with a coating thickness of 287 μm.

[0034] Example 3: Step 1: Mix 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water, heat in an oil bath to 65°C, and then slowly add a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate. After the addition is complete, stir thoroughly for 12 hours, then add 18 parts of octadecyltrimethoxysilane, and react at 25°C for 13 hours to prepare silica sol.

[0035] Step 2: Mix 30 parts tetrakis(2-hydroxyethoxy)silane, 40 parts polypropylene glycol, and 50 parts toluene diisocyanate, stir thoroughly, then add 0.01 parts catalyst, and react at 85°C for 3.5 h. After the reaction, add acetone to adjust the viscosity to prepare the prepolymer. Then add 20 parts betulin and 30 parts 3,4-diaminofurazan to the prepolymer, and continue the reaction for 3 h. After the reaction, remove acetone under reduced pressure at 55°C, and then add 30 parts silica sol to prepare the polymer.

[0036] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 135°C for 12 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0037] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 50 hours to obtain the finished product with a coating thickness of 275 μm.

[0038] Example 4: Step 1: Mix 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water, heat in an oil bath to 63°C, and then slowly add a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate. After the addition is complete, stir thoroughly for 11 hours, then add 18 parts of octadecyltrimethoxysilane and react at 23°C for 12 hours to prepare silica sol.

[0039] Step 2: Mix 30 parts tetrakis(2-hydroxyethoxy)silane, 40 parts polypropylene glycol, and 50 parts toluene diisocyanate, stir thoroughly, then add 0.01 parts catalyst, and react at 83°C for 3.2 h. After the reaction, add acetone to adjust the viscosity to prepare the prepolymer. Then add 20 parts betulin and 30 parts 3,4-diaminofurazan to the prepolymer, and continue the reaction for 2.5 h. After the reaction, remove acetone under reduced pressure at 53°C, and then add 30 parts silica sol to prepare the polymer.

[0040] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 132°C for 11 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0041] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 47 hours to obtain the finished product with a coating thickness of 262 μm.

[0042] Example 5: Step 1: Mix 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water, heat in an oil bath to 60°C, and then slowly add a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate. After the addition is complete, stir thoroughly for 10 hours, then add 18 parts of octadecyltrimethoxysilane, and react at 20°C for 11 hours to prepare silica sol.

[0043] Step 2: Mix 30 parts of tetrakis(2-hydroxyethoxy)silane, 40 parts of polypropylene glycol, and 50 parts of toluene diisocyanate, stir thoroughly, then add 0.01 parts of catalyst, and react at 80°C for 3 hours. After the reaction, add acetone to adjust the viscosity to prepare a prepolymer. Then add 20 parts of betulin and 30 parts of 3,4-diaminofurazan to the prepolymer, and continue the reaction for 2 hours. After the reaction, remove acetone under reduced pressure at 50°C, and then add 30 parts of silica sol to prepare the polymer.

[0044] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 130°C for 10 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0045] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 45 hours to obtain the finished product with a coating thickness of 250 μm.

[0046] Comparative Example 1: The mass ratio of betulin to 3,4-diaminofurazan was changed to 1:0.7, and the rest was the same as in Example 1. The specific steps are as follows: Step 1: 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water were mixed and heated to 70°C in an oil bath. Then, a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate was slowly added dropwise. After the addition was completed, the mixture was stirred thoroughly for 14 hours. Then, 18 parts of octadecyltrimethoxysilane were added and reacted at 30°C for 15 hours to prepare silica sol.

[0047] Step 2: Mix 30 parts of tetrakis(2-hydroxyethoxy)silane, 40 parts of polypropylene glycol, and 50 parts of toluene diisocyanate, stir thoroughly, add 0.01 parts of catalyst, and react at 90°C for 4 hours. After the reaction, add acetone to adjust the viscosity to prepare the prepolymer. Then add 20 parts of betulin and 14 parts of 3,4-diaminofurazan to the prepolymer and continue the reaction for 4 hours. After the reaction, remove acetone under reduced pressure at 60°C, and then add 30 parts of silica sol to prepare the polymer.

[0048] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 140℃ for 14 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0049] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 55 hours to obtain the finished product with a coating thickness of 300 μm.

[0050] Comparative Example 2: The preparation of silica sol was omitted, and the rest was the same as in Example 1. The specific steps are as follows: Step 1: 30 parts of tetrakis(2-hydroxyethoxy)silane, 40 parts of polypropylene glycol, and 50 parts of toluene diisocyanate were mixed and stirred thoroughly. Then, 0.01 parts of catalyst were added, and the mixture was reacted at 90°C for 4 hours. After the reaction, acetone was added to adjust the viscosity to prepare a prepolymer. Then, 20 parts of betulin and 30 parts of 3,4-diaminofurazan were added to the prepolymer, and the reaction was continued for 4 hours. After the reaction, acetone was removed under reduced pressure at 60°C, and then 30 parts of silica sol were added to prepare a polymer.

[0051] Step 2: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 140℃ for 14 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0052] Step 3: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 55 hours to obtain the finished product with a coating thickness of 300 μm.

[0053] Comparative Example 3: Birch alcohol was removed, and the rest was the same as in Example 1. The specific steps are as follows: Step 1: 82 parts of anhydrous ethanol, 6 parts of ammonia and 8.5 parts of deionized water were mixed and heated to 70°C in an oil bath. Then, a mixture of 1 part of methyltriethoxysilane and 1 part of tetraethyl orthosilicate was slowly added dropwise. After the addition was completed, the mixture was stirred thoroughly for 14 hours. Then, 18 parts of octadecyltrimethoxysilane were added and reacted at 30°C for 15 hours to prepare silica sol.

[0054] Step 2: Mix 30 parts of tetrakis(2-hydroxyethoxy)silane, 40 parts of polypropylene glycol, and 50 parts of toluene diisocyanate, stir thoroughly, add 0.01 parts of catalyst, and react at 90°C for 4 hours. After the reaction, add acetone to adjust the viscosity to prepare a prepolymer. Then add 30 parts of 3,4-diaminofurazan to the prepolymer and continue the reaction for 4 hours. After the reaction, remove acetone under reduced pressure at 60°C, and then add 30 parts of silica sol to prepare the polymer.

[0055] Step 3: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate at 140℃ for 14 minutes; assemble the laminated components with a frame to prepare a solar photovoltaic panel;

[0056] Step 4: Dissolve the polymer in tetrahydrofuran solvent to obtain a coating with a solid content of 30%; apply the coating to a solar photovoltaic panel and place it in a ventilated area for 55 hours to obtain the finished product with a coating thickness of 300 μm.

[0057] Testing and experimentation:

[0058] Water contact angle test: The finished product prepared by this invention was used as a sample, and the contact angle was measured by the seat drop method using an NRL type contact angle meter from Rame-Hart Corporation of the United States. The volume of the water droplet was 2.5 μL, and the measured contact angle was the average of five separate measurements of different areas of each coating.

[0059] Antibacterial test: The coating prepared according to this invention was used as the sample. 100 mL of distilled water and 3.85 g of brain heart extract culture medium were weighed, thoroughly mixed, and then sterilized in a high-temperature, high-pressure steam sterilizer at 121°C for 15 min to prepare the culture medium. Two 12 mL bacterial culture tubes were then taken, and 3 mL of BHI liquid culture medium was added. A single colony was picked from the solid culture medium of *S. mutans* strain and added to the liquid culture medium. The culture was incubated in a constant-temperature shaker (37°C, 200 rpm) for 15 h. The bacterial concentration was adjusted to 10⁻⁶ by comparison with a bacterial turbidity tube. 8 Bacterial suspension was prepared using CFU / mL. The sterilized sample was placed in a disposable sterile petri dish, and 80 μL of the diluted bacterial suspension was added to the center of the sample. A sterile covering film was then placed over the sample using sterile forceps, and gently pressed to spread the bacterial suspension as much as possible. The dish was incubated at 37°C for 24 hours, and the antibacterial rate was calculated. The results are shown in the table below.

[0060]

[0061]

[0062] Conclusion: The dosages in Examples 1 through 5 remained unchanged, with only some reaction parameters modified. Experimental data show that the properties of the samples did not exhibit significant fluctuations.

[0063] Comparative Example 1: The mass ratio of betulin to 3,4-diaminofurazan was changed to 1:0.7, and the rest was the same as in Example 1. The experimental data showed that compared with Example 1, the contact angle decreased to 110° and the antibacterial rate decreased to 88.2%. The reason for this is that changing the mass ratio of betulin to 3,4-diaminofurazan to 1:0.7 is not within the preferred compounding ratio of the present invention. Therefore, the synergistic antibacterial and stain-removing performance of betulin and 3,4-diaminofurazan will decrease, and the antibacterial rate will decrease.

[0064] Comparative Example 2: The preparation of silica sol was removed, and the rest was the same as in Example 1. The experimental data showed that compared with Example 1, the contact angle was reduced to 95° and the antibacterial rate was reduced to 96.8%. The reason for this was that removing the silica sol, which has strong hydrophobic properties, would reduce the overall hydrophobicity of the polymer, thus resulting in a significant decrease in the water contact angle.

[0065] Comparative Example 3: Birch alcohol was removed, and the rest was the same as in Example 1. The experimental data showed that, compared with Example 1, the contact angle decreased to 108° and the antibacterial rate decreased to 78.2%. The reason for this is that removing betulinum alcohol, which has antibacterial properties, would reduce the antibacterial rate of the polymer, thus reducing the antibacterial properties of the coating on the surface of the solar photovoltaic panel.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process method article or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process method article or apparatus.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A manufacturing process for a self-cleaning solar photovoltaic panel, characterized in that: Includes the following steps: Step 1: Mix tetra(2-hydroxyethoxy)silane, polypropylene glycol, and toluene diisocyanate, stir thoroughly, add catalyst, and react at 80-90℃ for 3-4 hours. After the reaction, add acetone to adjust the viscosity to prepare a prepolymer. Then add betulin and 3,4-diaminofurazan to the prepolymer and continue the reaction for 2-4 hours. After the reaction, remove acetone under reduced pressure at 50-60℃, and then add silica sol to prepare the polymer. The preparation steps of silica sol are as follows: anhydrous ethanol, ammonia and deionized water are mixed and heated in an oil bath to 60-70℃, then silica material is slowly added dropwise. After the addition is complete, the mixture is stirred thoroughly for 10-14 hours. Then, octadecyltrimethoxysilane is added, and the mixture is reacted at 20-30℃ for 11-15 hours to obtain silica sol. The silica material is a mixture of methyltriethoxysilane and tetraethyl orthosilicate in a mass ratio of 0.5-1.0:

1. Step 2: Lay out the glass, ethylene-vinyl acetate copolymer, solar cell, and ethylene-vinyl acetate copolymer in sequence, and then laminate them; assemble the laminated components with a frame to prepare a solar photovoltaic panel; Step 3: Dissolve the polymer in tetrahydrofuran solvent to obtain the coating; The coating is applied to the solar photovoltaic panel and placed in a ventilated area for 45-55 hours to obtain the finished product.

2. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 1, characterized in that: In step one, the content of each component of the polymer is as follows (by mass): 30-40 parts tetrakis(2-hydroxyethoxy)silane, 40-60 parts polypropylene glycol, 50-80 parts toluene diisocyanate, 0.01-0.05 parts catalyst, 20-40 parts betulin, 30-36 parts 3,4-diaminofurazan, and 30-40 parts silica sol.

3. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 2, characterized in that: The mass ratio of betulin to 3,4-diaminofurazol is 1:1.5-1.

8.

4. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 2, characterized in that: In step one, the catalyst is stannous isooctanoate.

5. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 1, characterized in that: The mass ratio of silicon material, anhydrous ethanol, ammonia, deionized water and octadecyltrimethoxysilane is 2:82:6:8.5:15-20.

6. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 1, characterized in that: In step two, the lamination process parameters are: lamination temperature of 130℃-140℃ and lamination time of 10-14min.

7. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 1, characterized in that: In step three, the solid content of the coating is 30-40%.

8. The manufacturing process of a self-cleaning solar photovoltaic panel according to claim 1, characterized in that: In step three, the coating thickness is 250-300μm.

Images